2018 Nissan Rogue SL - EPB Failure After Rear Brake Job (One Wheel Locked, Flashing EPB Light) - Need Advice, Especially From Nissan Techs
I’m working on my 2018 Nissan Rogue SL with Electronic Parking Brake and ran into a major issue after doing a rear rotor/pad replacement.
I put the EPB into service mode using my scan tool and started on the rear right (RH) side. While the caliper was off, I accidentally pumped the brake pedal, which caused the piston to pop completely out and dump brake fluid. I reinstalled the piston, bled that corner, and continued.
Because the piston wouldn’t retract afterward, I used a 9V battery to manually retract it so I could finish the job.
After reassembly, things went downhill:
- The EPB light is now flashing on the dash
- The rear left (LH) wheel is fully locked, even though I never touched that side
- Both rear wheels won’t rotate, so the car can’t move
- My scan tool is now showing multiple EPB‑related codes (see below)
At this point I’m trying to understand what I broke or confused in the system:
- Did manually retracting the piston with a 9V battery throw the EPB module out of sync?
- Is the left caliper stuck in a “clamp” state because the EPB couldn’t complete its calibration?
- Do I need to run a full EPB reset/initialization procedure after a piston pop‑out?
- Could air in the hydraulic system cause the EPB to lock one side?
- Is the RH caliper seal likely damaged, causing the module to detect a pressure fault?
If any Nissan techs or people familiar with Rogue/Murano/Pathfinder EPB systems can weigh in, I’d really appreciate it. I’m trying to figure out whether this is something I can recover with the right procedure, or if I’ve crossed into “replace the caliper or EPB actuator” territory.